and nato forces in afghanistan. general petraeus performed his last official act this morning when he handed off the post to lieutenant general john allen. >> after a military career spanneding 37 years, pet russ is coming home to head up the cia. barbara starr is live at the pentagon this morning. how is he being received at the cia? is he looking forward to this? >> he is taking off that uniform after 37 years. he will take a couple of weeks off and spend some time with his family. then the plan is for him to arrive at the cia essentially at the beginning of september. petraeus is going to have the same challenge there that so many incoming cia directors have. he's going to have to show that work force he is one of them, he understands their problems and challenges. at the cia the war on terror is shifting. we are seeing a lot of the developments and operations really pick up in places like yemen and somalia. of course, top concerns always pakistan and what's going on inside that country and north korea and perhap